333 221 027 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime

No factors below 2⁸¹

TF target 2⁸¹

P-1

B1 =	4885000
B2 =	4885000

Status	Date	User	Residue	Shift	Software
Unverified	2019-07-08	Max_32	B8CD168FBE426E__	186589954	Windows 64-bit,Prime95,v28.5,build 2

History

Date	User	Type	Result
2024-06-16	James Heinrich	NF	no factor TF: 69-72
2023-02-06	Mark Rose	NF	no factor TF: 80-81
2023-02-06	Mark Rose	NF	no factor TF: 79-80
2023-02-06	Mark Rose	NF	no factor TF: 78-79
2019-07-08	Max_32	C-LL	B8CD168FBE426E__
2016-05-12	Bob Schulien	NF	no factor TF: 77-78
2016-01-29	Max_32	NF-PM1	B1=4885000
2015-11-21	Bob Schulien	NF	no factor TF: 76-77
2015-08-25	Bob Schulien	NF	no factor TF: 75-76
2015-07-12	Bob Schulien	NF	no factor TF: 74-75
2015-06-21	Bob Schulien	NF	no factor TF: 73-74
2014-12-09	Carsten Kossendey	NF	no factor TF: 72-73
2014-10-18	Carsten Kossendey	NF	no factor TF: 71-72
2014-10-18	Carsten Kossendey	NF	no factor TF: 70-71
2014-10-18	Carsten Kossendey	NF	no factor TF: 69-70
2012-04-10	LaurV	NF	no factor TF: 66-69
2010-11-03	Architects Cubed	NF	no factor TF: 65-66